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Maxim Skidan

Maxim Skidan

Laboratory assistant researcher

Followers of Maxim Skidan305 followers
location of Maxim SkidanLimassol Municipality, Limassol, Cyprus

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  • Timeline

  • About me

    Oracle, MySQL, Postgres, Linux Engineer at IronFX

  • Education

    • Saint Petersburg State Electrotechnical University "LETI"

      1985 - 1993
      Master's degree Radio-engenering

      Courses:- Calculus and Linear Algebra- differential and integral calculus- Probability Theory and Statistics- Numerical Methods- mathematics of signal detection, optimal filtering, orthogonal decomposition of signals, Butterworth filters, Neumann-Pearson test, Bayesian test and etc- basics of programming, FORTRAN (1985), Pascal (1992 - 1993)- Special chapters of mathematics, Boolean algebra- Technical electrodynamics and quantum devices- Design and… Show more Courses:- Calculus and Linear Algebra- differential and integral calculus- Probability Theory and Statistics- Numerical Methods- mathematics of signal detection, optimal filtering, orthogonal decomposition of signals, Butterworth filters, Neumann-Pearson test, Bayesian test and etc- basics of programming, FORTRAN (1985), Pascal (1992 - 1993)- Special chapters of mathematics, Boolean algebra- Technical electrodynamics and quantum devices- Design and manufacture of radio-electronic equipment- Amplifiers and analog (electronic) devices - Radio receiving and transmitting devices- television and optoelectronic devices- impulse devices- CAD- Control Theory- radio engineering complexes- radar and radio navigation systems- system engineering and reliability of radio engineering control systems Show less

    • Санкт-Петербургский политехнический университет Петра Великого

      2000 - 2004
      Master's degree in Engineering and Tehnology Computer Science and Computer Technology

      Courses:- Computer science- Mathematics- Calculus and Linear Algebra- two-dimensional Fourier transform, wavelets, сervlets- Databases and SQL Programming- Basics of Machine Learning- Algorithms and Data Structures- Software engineering- Computer circuit design- Operating Systems- Programming Technologies- Design of Computer Networks based on CISCO Technology Fundamentals of Network Design, TCP/IP, Global Computer Networks, - Automata… Show more Courses:- Computer science- Mathematics- Calculus and Linear Algebra- two-dimensional Fourier transform, wavelets, сervlets- Databases and SQL Programming- Basics of Machine Learning- Algorithms and Data Structures- Software engineering- Computer circuit design- Operating Systems- Programming Technologies- Design of Computer Networks based on CISCO Technology Fundamentals of Network Design, TCP/IP, Global Computer Networks, - Automata theory- Organization of Computers and Systems- Electrical Engineering and Electronics- Unix Systems Administration- Method and Tools of Information Protection- Data Protection Mechanisms in Computer Networks- Architecture of UNIX Operating System- C/C++- System Programming in UNIX environment- Modern Issues of Computer Science and Computer Engineering- Independent Scientific Research Work- Metrology, Standardization, and Certification- Organization and Planning of Production- Fundamentals of Control Theory Show less

  • Experience

    • St. Petersburg State Electrotechnical Univercity

      Jan 1989 - Jan 1989
      Laboratory assistant researcher

    • Вибратор

      Jan 1995 - Jan 1997
      Radio Engineer

    • DJ ~ Lavr0V

      Apr 1999 - May 2000
      Network Specialist

    • Herzen State Pedagogical University of Russia

      Jun 2000 - May 2001
      System Engineer (FreeBSD, routing, networks)

    • Krilony

      May 2001 - Dec 2001
      System Engineer (AD, 1C, mail)

    • Лаура

      Jan 2002 - Mar 2003
      System Engineer (AD, mail, 1C)

    • Kenjitsu LLC, St. Petersburg, Russia / Nikitova LLC , Kiev, Ukraine / Collectiva, Chicago, IL, USA

      Mar 2003 - May 2004
      Systems engineer, network architect, programmer,

    • ValueCommerce

      Jul 2004 - Aug 2010

      Oracle, Postgres, Performance Tuning, banner-system, e-commerce 500 linux-machines, 800 IP addresses, many switches, routers an LB

      • Oracle Database Administrator

        Jun 2004 - Aug 2010

      • UNIX systems engineer

        Jul 2004 - Sept 2006

    • IBM

      Oct 2007 - Dec 2007
      Oracle DBA and UNIX Systems Engineer

    • Zebratelecom / Rostelecom

      Jan 2008 - Sept 2009
      Oracle DBA and Unix Systems Engineer

      telecom, IP-telecom, Rostelecom

    • Rosgosstrakh

      Apr 2008 - Sept 2008
      Oracle DBA

      Oracle DBA duties. Insurance, finance, big data

    • InfoWatch

      Jan 2010 - Jan 2012
      Senior Engineer (Oracle DBA and Linux Engineer)

      Oracle, Linux, Performance tunning, autoinstallation, (oracle's response file, kickstart). Resolving oracle's db and linux problems). Moving oracle's shemas to postgres and TimesTen. Clients are different oil companies, banks, mobile operators.

    • ServicePartner Ltd.

      Jan 2012 - Mar 2015
      Head of IT infrastructure (Linux machines: app-servers, databases, network operations)

      Management of 24x7 IT infrastructure.Pro-active monitoring (nagios, cron shell scripts).Oracle (rman, mviews, Transportable Tablespaces, PL/SQL-reports, partitioning, spatial, Gateway(s) to “firebird”, postgres, mssql. Data Pump, Glassfish). UnixODBC и FreeTDS drivers under RHEL.Tuning Linux, kernel parameters.MS SQL 2008, Firebird. Postgres + Postgis, Firebird, NAVTEQ, OpenStreetMap, billing.Reverse Engineering (Java-code, oracle-packages).Network devices (Cisco, 3COM, LinkSys), firewall tuning (iptables – DNAT, SNAT), terminalaccess RS-232 over network, openvpn, ipsec Show less

    • Spotware Systems

      Oct 2012 - Feb 2013
      Oracle DBA (80 databases)

      Oracle, TimesTen, Postgres, Java. Moving oracle's shemas to postgres and TimesTen

    • IronFX

      Apr 2016 - now
      Oracle, MySQL, Postgres, Linux Systems Engineer (+ devops)

      Oracle: performance tuning, sql-optimization, btree, function-based, reverse indexes, partitioning, statistics, rman backup, DataGuard, mviews, PL/SQL-reports, gateways, db-links to different databases, analytics, ad-hoc programming (PL/SQL).Percona Mysql clusters (master-master, master-slave, standalone), contention, locks, deadlocks, memory parameters tuning. innobackupex, backup and restore, monitoring long transactions, locks, deadlocks, filelog alerts, WarpSQL, LeapDB, Flexviews (mviews for mysql), events, TokuDB (Fractal Tree Indexing), InnoDB, Federated, Hole, CSV engines and etc.MariaDB: Spider, mroonga, galera, Postgresql clusters: ‘Always On’ architecture for PostgreSQL, TimeScaleDB extension, pgpool, pgbouncer, Trusted PostgreSQL Architectures (TPA), FTS (Full Text Search), pg_basebackup, pgBackRest, pg_receivewal / pg_receivexlog, pglogical, Postgres-BDR, JSON, GIST, SP-GIST, GIN - indexes, pgbarman, repmgr, pgpartman / pg_partman, pgbadger, pg_rewind, perf, btree-indexes, locks, transactions, isolation-levelss, vacuum, autovacuum, statistics, monitoring, PL/pgSQL, PL/R, Sharding: Postgresql-Citus, Mariadb-SpiderMongodb cluster: monitoring. authentication. MS SQL. Column-based db: Clickhouse, WarpSQL extension, Citusloadbalancing: nginx, ProxySQL, HAproxy, FoundryLBUbuntu, RedHat, CentOs, Fedora, Scientific Linux.http-clusters, elasticsearch, kibana, nginx-clusters, openresty, lua-nginx, Glusterfs, RabbitMQ, kafka-cluster, zookeeper, solace, consul, service mesh, node.js, n, Angular (ng), ETH, BTC, XRP, microservices, confluent-cloud, docker, docker compose, Kubernetes, nomad, cloud -technologies. libvirt qemu kvm, vmware, openstack. Azure, traffic control qdisc, kernel I/O schedulers,Monitoring: zabbix, nagios, prometheus, cron-jobs;Selunux, aparmor. command line, shell-programming, networks, CISCO devs, VoIP , tunnels, ipsec, openvpn, git, svn, iptables, ufw, tcp/ip, SNAT, DNAT...C/C++, R , R-studio Show less

  • Licenses & Certifications

    • Econometrics

      National Research University Higher School of Economics
      Jan 2021

    • Emc networker command line

      EMC
      Feb 2007

    • Traffic Monitor, Device Monitor

      InfoWatch
      Dec 2010

    • Geocoding and Search

      NAVTEQ
      Jan 2012

    • "Architecture of the IBM PC"

      Peter the Great St.Petersburg Polytechnic University
      Dec 2000

    • ORACLE DBA 10g

      FORS
      Jun 2007

    • Cisco Certified Network Professional (CCNP)

      Cisco Networking Academy
      Jun 2002

    • Oracle Database 11g: Advanced PL/SQL

      RDTEX
      Jul 2014

    • Oracle Database: Develop PL/SQL Program Units

      RDTEX
      Jun 2014

    • I/O performance tuning

      IBM
      Nov 2007